Heating device for camp cooking apparatus.



No. 857,063. PATENTED JUNE 18, 1907.

K. HOFMANN.

HEATING DEVICE FOR GAMP COOKING APPARATUS. APPLICATION FILED um. 28,1907.

KASPAR HOFMANN, OF MUNICH, GERMAWY.

HEATING DEVICE FOR CAMP COOKING APPARATUS.

Specification of Letters Patent.

Patented June 18, 1907.

Application filed January 28, 1907. Serial No. 354,496-

.T0 at whmn it may concern:

Be it known that I, KASPAR HOFMANN, a subject of the German Empire,residing at Munich, Germany, have invented new and useful Improvementsin Heating Devices for Camp Cooking Apparatus, of which the following isa specification.

The object of this invention is to provide an improved construction ofheating device for camp-cooking apparatus. I attain this object by themechanism illustrated in the ac companying drawing, in Which Figure 1 isa cross section and Fig. 2 a plan of a heating device constructed inaccordance with this invention.

Similar letters refer to similar throughout the several views.

Referring to the figures generally, this improved heating deviceconsists chiefly of a tin box a, of a collapsible tube made of real orartificial gut Z) (bladders or the like) charged with liquid fuel, forinstance methylated spirits, benzin, petroleum and the like and placedworm like upon the bottom into the said tin box and of a layer of powder0 for instance finely powdered sugar sprinkled over the said tube. Thesaid tube is tied up at short distances apart from each other withtwine, sausage-like, which causes the tube to retain its position andshould it be leaking prevents the escape of the whole of the fueltherefrom.

The device described is used and operates as follows :-l/Vhen it isintended to use the device the lid shown in Fig. 1 in dotted lines isremoved, a few small holes are pricked into the top surface of the saidtube by a needle which causes the fuel in the tube to mix with parts thefuel, thereby increasing the intensity of p the heat and insuring aconstant flame. The said layer prevents the heat generated also fromburning or bursting the said tube. To prevent the said tube sweating orevaporating the fuel during long storage of the device, it is renderedimpervious by suitable substances. Flour, salt or coke dust may also beused for the said layer.

This heating device may be made in any suitable size, for instance inpocket form for the use of tourists. The said layer may also consist ofa combination of materials in lieu of only one.

The flame is extinguished in the usual manner by placing the lid ontothe tin.

I claim:

A heating device for camp-cooking apparatus comprising a tin box, acollapsible tube charged with liquid fuel and placed upon the bottom inthe said tin, and a layer ofpowdered material over the said tube, allcombined substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

KASPAR HOFMANN.

l/Vitnesses ABRAHAM ScnLEsINeER, LOUIS MUELLER.

